Sheet-metal panel-work.



M. LACHMAN.

SHEET METAL PANEL WORK. APPLICATION FILED NOV. 5. 1909.

Patented Sept. 21, 1915.

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'll -Li MIN" 2: J Q H WH F F q 1 8 JE Q 5 HUGH/1:06 Maurice Lochmam Wow 12118 arrangements of the panels may be that is. the number of different UNITED %TATE% PATENT FllQQ MAURICE LACHMAN, OF NEW YORK, N. Y., ASSIGNOR TO UNIVERSAL ELECTRIC WELD- IN G COMPANY, OF=NEW YORK, N. Y., A CORPORATION OF NEW YORK.

SHEET-METAL PAN EL-WORK.

Specification of Letters Patent.

Patented Sept. 21, 1915.

Application filed November 5, 1909. Serial No. 526,347.

metal work and more particularly to theforming of panels in sheet metal for doors, wainscoting or other uses.

The main object of my invention is to simplify and cheapen the cost of manufacturinp metal panel work by forming the panel or panels from a single sheet of metal thereby avoiding the necessity of soldering or otherwise securing the panels to the frame.

A further object is to secure more artistic and sharply defined paneling than has heretofore been attained from a single sheet of metal.

My invention contemplates the use of a folding operation in contradistinction to a pressed metal operation, the latter being open tothe objections that sharp "edges cannot be attained and separate and specially formed dies arenecessary to make the different size and style panels which are never clearly or sharply defined.

To these ends my invention consists in the method of forming the panels hereinafter more particularly described and then set out in the claims.

In practising the invention up the product. a preferably square opening is formed in a blank of sheet metal at a place therein where it is desired to have a;-;corner of the panel. This step differs from anything previously done in that the opening is surrounded on all sides bytli'e metal of the sheet and which metal is continuous, that is, it is notcut or severed. The metalis then folded along lines continuous with the sides of the openings by means of suitable dies I until the openings entirely close.

ing to the way the metal is folded,

which the panels arelocated can ance with my invention and indicating by 3 is a perspective view and in making transversely shown in i 1 different forms of dies to be used being selfevident'fandwell-known to those skilled in Accordditferentf attained planes in I be varied.

In the accompanying drawings, Figure 1.. is a plan view of a blank prepared'in accorddotted lines the lines on which the blank is folded to obtain. the panels- F ig. 2 is a perspective view showing the folded along the-lines in one direction. Fig. of the sheet after the blank has been folded transversely to the foldings shown in Fig, 2 and shows the finished panels. Fig. 4: is a perspective view of another way folded to form panels differently disposed. Fig. 5 is a section taken. onthe line X X Fig. 3.

1 indicates a might be of any desired size and proportionaccording to the disposition desired vof the finishedpanels.

2 indicates openings stamped or otherwise suitably formedin the sheet 1, each opening being disposed or formed at a point where it is desired tohave a corner of. the panel. The said openings 2 areformed as a square, the length of the sides of which is'determined by the height or depth it-is desired to have the panel, the length of a side being the height or depth to which the finished panel will rise or be depressed The sides blank when the same blank may be.

Fig. 6 is a section taken on the line, -Y Y Fig. 4:. I

piece of sheet metal which of one opening-are arranged parallel with v the side'of the other openings, of th ferentsize or shape panels. ings are formed in their proper locations, the sheet is then folded along the dotted lines 3 by means of suitable her of-para'llel rises 4 and depressionst' as shown in Fig. 2. The sheet is then folded to the rises 4' and depressions 5 and along the dotted lines 6 until the openings 2 are entirely closed. By varying the position After-the opene'openings being varied to'obtain difdies into a'num the style of dies used either the form of finished panel work shown in Fig. 3 or that Fig. 4 will then be obtained, the

most predomina'nt,"having the intermediate panels 8 emanating'from each side of it in a lower plane and connecting it to the base or lowermost panels 91' In Fig, 4 the panels are located'in but two planes, being alternately.

raised depress It will be noted that-f the only place the metal is severed or out is at the corner edges of the panels, the entire other surrounding metal being continuous and uncut. i

What I claim as my invention is:

1. The method of forming-a raised panel in sheet metal, consisting in providing closed openings disposed at each corner of the desired panel, folding the metal in parallel lines along two sides of the openings and then folding the metal in parallel lines along the other sides of the openings until the openings close.

2. The method of forming a multiplicity of panels Within a body of sheet metal, consisting in providing a blanket sheet metal with a multiplicity of square openings within the body and one at each corner of each desiredpanel, folding the metal in parallel lines along two sides of all the openings'and then folding the metal transverse to said first folds along the other sides of the openings, whereby a plurality of rows of indiwithin the body of the metal andvidual panels lying in three difl'erent par-- allel planes.

3. Themethod of forming a raised panel Within a body of sheet metal, consisting in providing a blank of sheet metal with a multiplicity of square openings one at each corner of the proposed panels, the sides of said openings being equal to depth or height of the panel, folding the metal along the sides of the openings in parallel lines at two of the corners and then folding the metal transversely thereto along the sides of the openings in the other corners whereby a plurality of duplicate, square panels are formed within the body of the blanln Signed at New York in the county of New York and State of New York this 3d day.

of November A. D. 1909.

MAURICE LACHMAN. Witnesses:

IRENE LEFKOWITZ, EDWARD M. J ELLINEK.

the desired 

